Assiohob to pacxabd motor cab cok



July 1o, 1923.

M.- TIBBETTS VIBRAT'ION DAMPING DEVICE 'iff'. a Inl,

j INVENTOR.

`-M"""""` g e l www Ybbetfs i' part of this specification,

' a i cylindrical surface 15 and an inte named .my 10.1923; Re. 15,645.UNITED STAT-Es PATENT l OFFICE.

m!! xmlns, or nl vrnorr,

" rm, or nrrao ,ncmean, a conronunon'or nement.

Virinna'i'ion nali'nio Dmoz i '"v Io. 1,985,67, datedeeember 16, 1919,Io. N370, llecl Iayll, 191i. Application for reissue iled December 15,1921. lerlal Io. 582,700.

Toqwhomitmayaoncem: from the plate .portion 16 is a detachable Be itknown `that I, MmronTinBnrrs, a plate'17, fastened to the member v11 bythe citizen of the United States of America, and

a resident orf-Detroit, Michigan, have in plates 16 and17 are'spa'ced al vented a new and useful Improvement in tance 'and the cylindrical surace 15, which .Vibration Dampn Devices, which invention isconcentricwith the axis of the crank shaft is' fully set forth in the followingspecifica- 10, isarranged between the plates.

tim. The` vouter member of the' dam r com- This invention relates tohydrocarbonmo'-, prises "a heavy" metallic ring 19, wliiech may l. torsand particularly to the construction of vibration dempers therefor.'

.improvement upgn the damper constructions illustrated in tters PatentNo. 1,085,443,

datedJanuai-y 27, 1914. portion 20 is varranged` between the'- One ofthe objects of the invention 'isto friction plates 16 and' 17 of theinner mem provide a .vibration damping f bei' 11, and its vinnercylindrical surfa is device o simple and practical construction, and oneadapted to cylindrical surface 15 of said mem r"`11.

in which the wearin parts may be easily removed and if'eplace., f f Thusthe flywheel 19 may rotate freely rela- Other objects of the inventionwill appear tive to the inner member' except forthe fric- .from thefollowing desciiipton, taken/ in contion means hereinafter described,and it is nection withfthe drawings which 'form-'a and in which Figure/1isv ajsectional f viewof a device embodying the inwentiom 'the' upperhalf being substantiiiy on the line i of Fig. e, u lower left hand sidebei on the line l', and thelower right hand si e lbeing on the line 1"offsaid ligure. l Y f Fig. 2 is a front .view'of one half of the devicelshown in Fig. 1; .3 isa'pers 've'viewof a section of one of thefrictiondisks; and

4 is asimilar view vof another form be Called the. f liy'wheel part ofthe dam `r, -and it is forme with an inwardly exten 'ng portion 20, inwhich are drilled several om ii'ilgssm, fora purpose hereinafter descriIt forms an of the etachableplate 17.

Frictional elements are introduced between the rtion o f the flywheeland the friction p stes 16 and 17, these elements as shown being in theform of stamped metal disks 22 having suitable lining or wearingmaterial 23 suitably attached thereto as by the rivets 24. These disks,it lwill be seen, alsoiit loosely on the cylindrical surface 15 of theinner member, and ma be removedand` replaced with the fly-whee 19 byremoving 'the friction' plate 17.

crank. The disks 22 are refmblj adtedio, Referring tothe drawin 10represents rotate with the fl w eeli19, andft ey are one of the ends ofa crank aft of a hydrotherefore stam with -suitably spaced carbon motor,preferably of the multi-cylinder type. 'Die vibration damper' is mountedu n and preferabl entirely supported by 's end of the orang shaft, andit comprises two relatively rotatable members, one of Ywhich isintegrally formed with or or keyedtothe crank shaft. In the form of theinvention shown in Figs. 1 and 2, the inner memberll is ke ed to thecrank-shaft asby .thekey 12 an secured thereon b av nut 13,whichhasteeth 14 on its outer ace to co0 te with similar teeth on astarting Th imm member 11 .is fomea'win. a

wheel or outer member 19.

cylin- In fo th r: 26, the metal is rming e ..cpressed outwardly at thewhich are adapted to enter certain of the openings 21 so that the lyheelwill carry the disks around with it.V The disks also stamped withrecesses 26 suitably spaced so that they will register' with certainothezit'faof the opeeiings 21, and coiled springs are arrang in thoseopenings' and adapted to have their ends sea in the '-v=:-r': 26 0f thedisks. 'Thus tlm sprin'gs yieldingly tend to separate the disks 22A anpress them in contact with the .friction plates 16 11, thus caus' africtional tion between e inner member an the dyhan,

late rtion 16 at one end of t At theother end, vand spaced screws'18,'It will be seen that lthe friction art some dis-v other side of thenCHIGAI, ASSIGI'OB TU PACIKABIJ IOTOB CAB GOI- v t and .have a bearing un the 4 held in lplace on the inner member by means and 17 of the innermember connec- 1 spring tongues 27 are 8 of.these openings,

disk and forms a boss 28 which enters an olpening 29 cut in the .liningmaterial 23 and t ereby assists in -anchoring the lining to` the disk22.

It will be understood that any suitable number of. xienings 21 andcorrespondiiig bosses 25 an springs 27 may be employe but inthe formshown in Figs'. 1 and 2 there 4 of ,them being used forthe bosses 25 andthe" other 4 for the spring houses.

Another form of friction disk is illus-` trated in the 'bosses 25'arethe same as those shown Iin thedisk above-described, but in lieu of thesprings 27, the disk 22* is formed with which are stamped at suitablepoints in the surface of the disk.

^ The disk in this case is--made of suitable [mem rs having. a partarranged intermespring material -so that the spring means of ing africtional said members.

tween said device is formed'as an integral part of the friction disks.'i

Other and similar forms of the be used without-departing from or scopeof this invention.

What is claimed is l 1. In a device ofthe class described, in`combination, an inner member, anouter relatively rotatable inertiamember, friction disks betweenfs'aid members, and means for separatingsaid disks to form a driving connection between the device may thespirit frictions members. e

2. In a device-of the vclass described, in combination, an inner member,an outer relatively rotatable inertia member, one of said diat'e opposinplsate parts of the other member, friction is between the members, andlmeans carried by said intermediate part for yieldinglyoperatinfg thedisks to secure a. driving connection etween the members.

3. In a device ofthe class described, in combination, an inner memberhaving two spacedradial plateparts, one of said parts being removable,an outer relatively rotatable member having a part arrangedbe tween saidplate parts, friction disks be?. tween said part o the outer member andsaid plate partsof the inner member, and springs uperatin on said disksfor produc# riving connection between 4. In a device lof the'classdescribed,in combination, an'inner member having twoj spaced radial lateparts, one of said parts being removabe, an outerrelatively rotatablem'embe'i; having a part arra between said plate parts, friction diskspart of the outer member and plate parts of the innermember, and springsearned by said part of the outer member and ope on saiddisksforproducing a friction'al 'ving connection be'` tween saidmembers.

perspective in Fig. 4. 'In this disk,

mounted between said plates,

lflywheel and the plates,

5. in a dviof the cass described, in

com ination, an inner member having two spaced radial plate parts', oneof said parts being removable, an outer relatively rotatable memberhaving a part arranged between said plate parts, friction disks betweenjsaid part o the 'outer member and said plate parts of the inner member,and a series' of springs each of which acts u n both said disks tendingto separate t em vand thereb connection be tween said members.

combination, an 4inner member having two spaced radial late parts, oneof said parts being removab e, an outer relatively rotatablememberhaving a part arranged between said plate arts, friction disksbetween said part ci) the outer member and said late parts of the innermember, and

coil springs housed in said part of the outer member and operating onsaid disks for the purpose described- 7. In a device of the classdescribed, in

combination, an. inner member, an outer inertia member, friction disksbetween said produce a frictional driving 6. In a device of the classdescribed,`in

members, and means arranged between two 9. In a vibration damper, incombination, a shaft, an inner member comprising a pair of'separatedplateson said shaft, an outer inertia member rotatable relatively totheinner member `and comprising a flywheel mounted between said plates afriction disk 'between each said plate and t e adjacent side -of theflywheel, and springs acting on scribed.-

in the flywheel the disks, for the purpo de- 10.In a vibration dam r, incombina-` tion, a shaft, Van inner mem r-com pair of separated plateseonsaid s outer inertia member rotatable relativel to tleinner' member andcomprisin a flywheel mounted between said plates, a fiction disk betweeneach said late and the'adjacent side ofthe iiywh and' springs betweensaid disks and the `iiywheel for pressin risinga purpose described.

aft,- an

g the disks into contact with the plates, for the 11. In a vibrationdamper, in combna- I' tion, a shaft, a member keyed thereto and having acylindrical bearing surface and a on said cylindric .ber-andsaid meas eon each side of saidywheel and' having means causing themfto turntherewith, a friction plate detachably secured to said member to retainsaid ywheel and disksiin place, and sp means adaptedl to inam' tain africtional riving connection between said member and said flywheel. p

12. In a vibration damper, in combination, a shaft, a member keyedthereto and ha a cylindrical bearing surface a friction plate, agywheelfhaving .a beari surface, a friction di on each side of saidiiywheel and having means causing them t9V turn therewith, a fric-AY:tion platedetacliably secured to said member to retain said ywheeland disks in place, and a series4 of coil s rings housed in' saidflywheel and. adap to maintain a frictional driving coi'lilneclztionbetween said memee 13. In a vi ration damper, in combination, an innermember comprising separated plates, an outer member having a portionarranged between said plates and hav'- ing openings in said portion,friction disks having stam out portions-to enter some of said openingsto cause the disks to turn with the outer member, and springs ar-nranged in others of said openings for operating said disks. l

1 4. In a vibration damper, in combination, an inner member comprisingsepa-- rated plates, aii outer member havinga portion arranged betweensaid plates and having openings in said portion, friction disks havingstamped out portions to enter -some of said openings to cause the disksto turn with the outer member, and 'springs ar'- ranged in others ofsaid openings and 'ressing said disks apart and in frictions contactwith said plates, for the purpose de- `ceses, and springs -arrang saidopenings andh entering said recesses 15. Ina vibration damper, incombination an inner member comprising separated plates, an outer memberhaving a portion arranged between said plates and having openings insaid portion, friction disks having stamped out portions to enter somecf said openings to cause lthe disks to turn with the outer member, andhaving stam d reed in ot ers-of for preing said disks apart and in fric'tional contact with said plates.

16. In a device ofv the class described, in

combination, an inner member, an outer relatively rotatable inertiamember, one of,

said 'members having a part arranged intermediate opposing plateparts'of the other bers, and means for .yieldin ly separating said disksto form a frictions driving connection between the members.

17. In a device of the class described, lin combination,4 an innermember provided with a peripheral recess, an outerfrelatively rotatablemember having a portion projecting into the peripheral recess vof saidinner member, friction disks between said members, and means foryieldingly separating said disks to form a frictional driving connection'between the members. v

18. In a device of the cl described, in

combination, an inner member provided with a peripheral recess, an outerrelatively rotatab e member having a portion projecting into theperipheral recess of said inner member, friction disks between, the mem'bers', and means carried by the projecting portion ofsaid outer memberfor yieldingly operating the disks to secure a driving connectionbetweenthe members.

In testimony whereof I have signed this specification.

-l MILTONl TIBBE'rrsmember, friction disks between the mem-

